[2-((1R,3R,5S)-6,6-Dibromo-bicyclo[3.1.0]hex-3-yl)-ethyl]-carbamic acid (1R,2S)-2-phenyl-cyclohexyl ester                                                                                                                                                              在
                                                                                                                                                                                 3 A molecular sieve   、                                                                                                  silver perchlorate                                                                                                                                  作用下,
                                                                                                                以
                                                                                         
乙二醇二甲醚                                                                                  为溶剂,
                                                                                                                                                    反应 19.0h,
                                                                                                                生成                                                 (1R,5S)-8-Bromo-2-aza-bicyclo[3.3.1]non-7-ene-2-carboxylic acid (1R,2S)-2-phenyl-cyclohexyl ester   、                                                                                             (1S,5R)-8-Bromo-2-aza-bicyclo[3.3.1]non-7-ene-2-carboxylic acid (1R,2S)-2-phenyl-cyclohexyl ester